--- a/python/mozbuild/mozbuild/frontend/emitter.py
+++ b/python/mozbuild/mozbuild/frontend/emitter.py
@@ -366,16 +366,25 @@ class TreeMetadataEmitter(LoggingMixin):
         # context more or less truthful about where the external library is.
         context = Context(config=self.config)
         context.add_source(mozpath.join(self.config.topsrcdir, dir, 'dummy'))
         if force_static:
             return ExternalStaticLibrary(context, name)
         else:
             return ExternalSharedLibrary(context, name)
 
+    def _handle_linkables(self, context, passthru):
+        for obj in self._process_sources(context, passthru):
+            yield obj
+
+        self._handle_programs(context)
+
+        for obj in self._handle_libraries(context):
+            yield obj
+
     def _handle_libraries(self, context):
         host_libname = context.get('HOST_LIBRARY_NAME')
         libname = context.get('LIBRARY_NAME')
 
         if host_libname:
             if host_libname == libname:
                 raise SandboxValidationError('LIBRARY_NAME and '
                     'HOST_LIBRARY_NAME must have a different value', context)
@@ -620,37 +629,32 @@ class TreeMetadataEmitter(LoggingMixin):
             passthru.variables['IS_GYP_DIR'] = True
 
         dist_install = context['DIST_INSTALL']
         if dist_install is True:
             passthru.variables['DIST_INSTALL'] = True
         elif dist_install is False:
             passthru.variables['NO_DIST_INSTALL'] = True
 
-        for obj in self._process_sources(context, passthru):
-            yield obj
-
         generated_files = set()
         for obj in self._process_generated_files(context):
             generated_files.add(obj.output)
             yield obj
 
         for obj in self._process_test_harness_files(context):
             yield obj
 
         defines = context.get('DEFINES')
         if defines:
             yield Defines(context, defines)
 
         host_defines = context.get('HOST_DEFINES')
         if host_defines:
             yield HostDefines(context, host_defines)
 
-        self._handle_programs(context)
-
         simple_lists = [
             ('GENERATED_EVENTS_WEBIDL_FILES', GeneratedEventWebIDLFile),
             ('GENERATED_WEBIDL_FILES', GeneratedWebIDLFile),
             ('IPDL_SOURCES', IPDLFile),
             ('PREPROCESSED_TEST_WEBIDL_FILES', PreprocessedTestWebIDLFile),
             ('PREPROCESSED_WEBIDL_FILES', PreprocessedWebIDLFile),
             ('TEST_WEBIDL_FILES', TestWebIDLFile),
             ('WEBIDL_FILES', WebIDLFile),
@@ -740,17 +744,17 @@ class TreeMetadataEmitter(LoggingMixin):
                                          context);
 
         for c in components:
             if c.endswith('.manifest'):
                 yield ChromeManifestEntry(context, 'chrome.manifest',
                                           Manifest('components',
                                                    mozpath.basename(c)))
 
-        for obj in self._handle_libraries(context):
+        for obj in self._handle_linkables(context, passthru):
             yield obj
 
         for obj in self._process_test_manifests(context):
             yield obj
 
         for obj in self._process_jar_manifests(context):
             yield obj